Root-Tail v0.0.4b is a program which tails a text file and displays the information directly to the root window of your desktop transparently, which means without window frames or windows. It is an extremely handy program for monitoring /var/log/secure and /var/log/messages while you run X. This program will even trail different files and display them in different colors.
You can download it from the following link: https://packetstormsecurity.com/files/download/13338/rt-0.0.4B.tgz
Source: https://packetstormsecurity.com/files/13338/rt-0.0.4B.tgz.html